Documentation/lguest/Makefile

   1 # This creates the demonstration utility "lguest" which runs a Linux guest.
   2
   3 # For those people that have a separate object dir, look there for .config
   4 KBUILD_OUTPUT := ../..
   5 ifdef O
   6   ifeq ("$(origin O)", "command line")
   7     KBUILD_OUTPUT := $(O)
   8   endif
   9 endif
  10 # We rely on CONFIG_PAGE_OFFSET to know where to put lguest binary.
  11 include $(KBUILD_OUTPUT)/.config
  12 LGUEST_GUEST_TOP := ($(CONFIG_PAGE_OFFSET) - 0x08000000)
  13
  14 CFLAGS:=-Wall -Wmissing-declarations -Wmissing-prototypes -O3 -Wl,-T,lguest.lds
  15 LDLIBS:=-lz
  16 # Removing this works for some versions of ld.so (eg. Ubuntu Feisty) and
  17 # not others (eg. FC7).
  18 LDFLAGS+=-static
  19 all: lguest.lds lguest
  20
  21 # The linker script on x86 is so complex the only way of creating one
  22 # which will link our binary in the right place is to mangle the
  23 # default one.
  24 lguest.lds:
  25         $(LD) --verbose | awk '/^==========/ { PRINT=1; next; } /SIZEOF_HEADERS/ { gsub(/0x[0-9A-F]*/, "$(LGUEST_GUEST_TOP)") } { if (PRINT) print $$0; }' > $@
  26
  27 clean:
  28         rm -f lguest.lds lguest